Home / 76,307.70-105,305.85-42,317.58

Finding the Fourth Proportional to 76,307.70, 105,305.85 and 42,317.58

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Solution

The fourth proportional to 76,307.70, 105,305.85 and 42,317.58 is: 58,398.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,307.70 : 105,305.85 = 42,317.58 : x
  2. Step 2: Convert to fraction form
    76,307.70/105,305.85 = 42,317.58/x
  3. Step 3: Cross multiply
    76,307.70x = 105,305.85 × 42,317.58
  4. Step 4: Simplify right side
    76,307.70x = 4,456,288,731.84
  5. Step 5: Solve for x
    x = 4,456,288,731.84/76,307.70
  6. Step 6: Final answer
    x = 58,398.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.